PMID- 26790936 OWN - NLM STAT- MEDLINE DCOM- 20161014 LR - 20161230 IS - 1873-2542 (Electronic) IS - 0378-1135 (Linking) VI - 183 DP - 2016 Feb 1 TI - Investigation on host susceptibility of Tibetan pig to infection of porcine reproductive and respiratory syndrome virus through viral challenge study. PG - 62-8 LID - S0378-1135(15)30105-X [pii] LID - 10.1016/j.vetmic.2015.11.035 [doi] AB - Previous reports showed that infection of porcine reproductive and respiratory syndrome virus (PRRSV) stimulated a variable host response and pig susceptibility to PRRSV was largely dependent on its genetic composition. In the present study, host susceptibility of Tibetan pig to PRRSV was compared with other two pig breeds, ZangMei black and Large White, by challenge of them with highly pathogenic PRRSV (HP-PRRSV). In the first challenge test, each eight piglets of the three breeds were inoculated with HP-PRRSV and clinical symptoms, viremia and animal mortality were examined up to 28 days post inoculation (DPI). In the secondary pathological study, each twelve piglets of the three breeds were challenged and three pigs of each breed were sacrificed on 4, 7, and 14 DPI for examination of gross damage and lung microscopic lesions. The results showed that no typical clinical signs such as cough, diarrhea and high fever were observed in challenged Tibetan pigs, which however all occurred in Large White accompanied with approximately 40% mortality (3/8). In addition, a significant low and short viremia was detected specifically in Tibetan pigs. Based on histopathological analysis of lung sections, a mild to moderate interstitial pneumonia in Tibetan pigs and a much severe pneumonia in Large White were identified on 7-14 DPI. In summary, the study demonstrated that three genetically different pig breeds exhibited a differential host susceptibility to HP-PRRSV and Tibetan pig was much less susceptible to the virus in the three tested pig breeds. CI - Copyright (c) 2015 Elsevier B.V. All rights reserved. FAU - Kang, Runmin AU - Kang R AD - College of Life Sciences, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, Sichuan University, Chengdu, PR China; Sichuan Animal Science Academy, Chengdu, PR China. FAU - Ji, Gaosheng AU - Ji G AD - College of Life Sciences, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, Sichuan University, Chengdu, PR China. FAU - Yang, Xin AU - Yang X AD - College of Life Sciences, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, Sichuan University, Chengdu, PR China. FAU - Lv, Xuebing AU - Lv X AD - Sichuan Animal Science Academy, Chengdu, PR China. FAU - Zhang, Yi AU - Zhang Y AD - College of Life Sciences, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, Sichuan University, Chengdu, PR China. FAU - Ge, Mengyun AU - Ge M AD - College of Life Sciences, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, Sichuan University, Chengdu, PR China. FAU - Pan, Yun AU - Pan Y AD - College of Life Sciences, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, Sichuan University, Chengdu, PR China. FAU - Li, Qingzhou AU - Li Q AD - College of Life Sciences, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, Sichuan University, Chengdu, PR China. FAU - Wang, Hongning AU - Wang H AD - College of Life Sciences, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, Sichuan University, Chengdu, PR China. Electronic address: whongning@163.com. FAU - Zeng, Fanya AU - Zeng F AD - College of Life Sciences, Animal Disease Prevention and Food Safety Key Laboratory of Sichuan Province, Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, Sichuan University, Chengdu, PR China. Electronic address: zengfanya@scu.edu.cn. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151130 PL - Netherlands TA - Vet Microbiol JT - Veterinary microbiology JID - 7705469 RN - 0 (Cytokines) SB - IM MH - Animals MH - Body Temperature MH - Breeding MH - Cytokines/genetics MH - Gene Expression Regulation/immunology MH - *Genetic Predisposition to Disease MH - Porcine Reproductive and Respiratory Syndrome/*genetics/mortality/pathology MH - Porcine respiratory and reproductive syndrome virus/*physiology MH - Swine/*classification/*genetics MH - Viral Load MH - Weight Gain OTO - NOTNLM OT - Challenge OT - Highly pathogenic porcine reproductive and respiratory syndrome virus OT - Host susceptibility OT - Sus scrofa OT - Tibetan pig EDAT- 2016/01/23 06:00 MHDA- 2016/10/16 06:00 CRDT- 2016/01/22 06:00 PHST- 2015/06/22 00:00 [received] PHST- 2015/11/26 00:00 [revised] PHST- 2015/11/27 00:00 [accepted] PHST- 2016/01/22 06:00 [entrez] PHST- 2016/01/23 06:00 [pubmed] PHST- 2016/10/16 06:00 [medline] AID - S0378-1135(15)30105-X [pii] AID - 10.1016/j.vetmic.2015.11.035 [doi] PST - ppublish SO - Vet Microbiol. 2016 Feb 1;183:62-8. doi: 10.1016/j.vetmic.2015.11.035. Epub 2015 Nov 30.